【摘 要】
：
对IEEE 802.11 DCF机制的核心算法二进制指数退避算法提出一种基于冲突感知的分析模型:基于平均竞争窗口与冲突概率之间的关系,得到在饱和条件下系统的延时和吞吐量分析模型,
论文部分内容阅读
对IEEE 802.11 DCF机制的核心算法二进制指数退避算法提出一种基于冲突感知的分析模型:基于平均竞争窗口与冲突概率之间的关系,得到在饱和条件下系统的延时和吞吐量分析模型,并得出基本接入模式与RTS/CTS接入模式的切换门限值。该模型简化了BEB算法,降低了计算复杂度,但能很好地反映算法特性。通过理论分析与OPNET仿真,验证了模型的正确性,同时为预测和优化无线网络系统的性能提供理论依据。
The core algorithm of IEEE 802.11 DCF mechanism Binary exponential backoff algorithm A conflict awareness based analysis model is proposed. Based on the relationship between the average contention window and collision probability, the delay and throughput model of the system under saturation condition is obtained. Obtain the switching threshold of basic access mode and RTS / CTS access mode. The model simplifies the BEB algorithm, reduces the computational complexity, but can well reflect the characteristics of the algorithm. Through theoretical analysis and OPNET simulation, the correctness of the model is verified, at the same time, it provides a theoretical basis for predicting and optimizing the performance of wireless network system.
其他文献
Partial agglomeration is a major problem in fluidized beds. A chaotic analytical method based on the phase-plane invariant of the pressure fluctuations in the f
The contact melting processes of phase change material (PCM) under a sliding plate, which is driven by the friction and temperature difference AT, are studied.
The impact of boundary layer suction on the aerodynamic performance of a high-turning compressor cascade was numerically simulated and discussed. The aerodynami
This paper is to promote investigation into the nuclear rocket engine (NRE) propulsion option that is considered as a key technology for manned Mars exploration
对使用感应同步器作为转台位置反馈元件的测角系统的工作方式进行了深入分析,比较了四种工作方式的优劣及实现的可行性,并重点分析了单向激磁双向输出鉴幅这种工作方式。同时
通过对大型走滑型 M盆地的研究发现 ,在早、晚白垩世不同的走滑时期分别形成 NEE,NW和 NNW向三大构造体系 ,表现出剪切和扭张两种不同形式的走滑构造特征。认为 :M盆地油气丰
围绕基于MBD条件下对三维工艺进行了重点的研究,并根据实际现有产品的条件下,提出了基于MBD三维工艺的实施解决方案。通过对三维工艺的实现,提升了航空制造企业的现代化制造
针对开式整体叶盘叶片型面数控抛光,首先介绍多坐标数控抛光机,然后提出分段直纹面拟合叶片型面,并利用分段直纹面的偏置面直母线生成刀位轨迹,最后进行了数控抛光参数优化实
本文对产品分类编码标准化的现状进行了全面的调研,并分析了我国对产品分类编码标准化工作的需求,最后针对产品分类及描述的新需求,从产品分类代码及元数据标准、标准的动态
由于中间相沥青原料丰富、价格低廉、性能优异以及具有较高端炭产率等优点,因此中间相沥青被广泛应用于制造多种重要的高级炭材料,如超高模量碳纤维、超高比表面积活性炭、超